第三部分：概括大意与完成句子(第23～30题，每题1分，共8分)
下面的短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为第1～4 段每段选择1个最佳标题；(2)第27～30题要求从所给的6个选项中为每个句子确定1个最佳选项。
23. Paragraph 2 _____
24. Paragraph 3 _____
25. Paragraph 4 _____
26. Paragraph 5 _____
A. Atmospheric Scientists
B. The Calculations Made at the Berlin Workshop
C. The Previous Calculations of the Effect of Aerosols
D. The Scientists' Agreement
E. The Authoritative Conclusion
F. Greenhouse Gases
27. When the cover diminishes in the coming decades, temperature.
28. The conclusion reached at the Berlin workshop
29. The Berlin workshop concluded that the real figure
30. The increase of greenhouse gases
A. will influence future-climate change
B. was somewhat surprising
C. will rise rapidly
B. was known to us all
E. was much higher than had been expected
F. will drop dramatically